Lever-harrow.



A. B. HAYS.

LEVER HARROW.

APPLICATION rum) SEPT. 23, 1910.

Patented May 14, 1912.

3 SHEETS-SHEET 1.

COLUMBIA PLANoauAPn CU-WASHINDTDN. u. c.

A. B. HAYS.

LEVER HARROW.

APPLICATION FILED SEPT. 23, 1910.

Patented May 14, 1912.

3 SHEETS-SHEET 2.

coLumnm vLANommml cOHWAsmNGTON. u. c.

A. B. HAYS.

LEVER mgmow. APPLICATION FILED SEPT. 23, 1910.

1,026,394. Patented May 14, 1912.

3 SHEETS-SHEET 3.

, atbo'onu s COLUMBIA PLANOUIZM'II cu.. WASHINGTON. u. C,

UNITED STATES PATENT OFFICE.

.A'IHOL B. HAYS, OF WOLF BUTTE, NORTH DAKOTA, ASSIGNOR 0F ONE-HALF TOFRANK A. HAYS, 0F WOLF BUTTE, NORTH DAKOTA.

LEVER-HARROW.

Specification of Letters Patent.

Patented May 14, 1912.

Application filed September 23, 1910. Serial No. 583,476.

To all whom it may concern Be it known that I, A'rnoL B. HAYs, a citizenof the United States, residing at \Volf Butte, in the county of Adams,State of North Dakota, have invented certain new and useful Improvementsin Lever-Harrows; and I do hereby declare the following to be a full,clear, and exact description of the invent-ion, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention relates to harrows and more particularly to the class ofadjustable harrows or drags.

The primary object of the invention is the provision of a harrow inwhich the harrow teeth may be adjusted laterally or in a direction withthe line of draft of the harrow.

Another object of the invention is the provision of a harrow in whichthe teeth thereof are pivotally mounted in rows so that each row ofteeth may be adjusted whereby the teeth in the row will assume anangular disposition relative to the ground, and which teeth may be heldin their adjusted position.

A still further object of the invention is to simplify and generally,improve the structure of this class of implements whereby they will bemore effectual in operation and also to enable the same to bemanufactured at a minimum expense.

With these and other objects in view the invention consists in theconstruction, combination and arrangement of parts as will behereinafter more fully described illustrated in the accompanyingdrawings disclosing the preferred form of embodiment of the inventionand pointed out in the claims hereunto appended.

In the drawings: Figure 1 is a top plan view of a harrow constructed inaccordance with the invention. Fig. 2 is a side elevation thereof. Fig.3 is an end elevation. Fig. 4 is a sectional view on the line l4 ofFig. 1. Fig. 5 is a sectional view on the line 55 of Fig. 1. Fig. 6 is adetail enlarged view in perspective elevation of the operating lever andits manner of connection with the adjunct parts of the harrow.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings.

Referring to the drawings by numerals l0 designates generally a harrowcomprising a plurality of spaced horizontally disposed teeth carryingbars each comprising spaced strips 11 between which are arranged a setof harrow teeth 12, each being connected to the said strips 11 by amedial pivot 13, the same being passed through the said strips 11,whereby they will be held against separation from each other.Surrounding these horizontal bars are split bearings 14: the latterbeing detachably secured to spaced forwardly directed bars 15 whichcarry at their forward ends hook members 16, the same being detachablyengaged by clevises 17 connected to a drag beam 18 which has connectedthereto in the ordinary manner draft animals whereby the harrow may bedrawn through a field.

Pivotally connected to the upper ends of the teeth 12 are adjusting bars19 to one of which is fixed a toothed segment 20 the same being normallyengaged by a manually releasable spring controlled locking pawl or dog21 carried upon a throw lever 22, the same being pivoted as at 23 toboth the adjusting bar 19 carrying the segment and the tooth carryingbar directly beneath the same so that upon shifting the said throw lever22 laterally to the line of draft of the harrow the said teeth 12 willbe angularly adjusted laterally of the implement. Disposed at rightangles to the segment 20 is a further toothed segment 24 the same beingfreely slid-able in a suitable slot formed in the throw lever 22 andthis segment 24 is fixed to the end of an adjusting link 25 the samebeing disposed parallel with the line of draft of the harrow andpivotally connected in the upper bifurcated end of a swinging post 26the same being pivoted to the other adjusting bar 19 and also betweenthe strips 11 of the remaining tooth carrying bar of the harrow.Connected to the throw lever 22 is a further manually releasable springcontrolled locking pawl 27 the latter being normally engaged with thetoothed segment 24 so that on release of the said pawl 27 from thesegment 2 1 the throw lever may be swung in a direction to shift theadjusting link 25 in a direction with the line of draft of the harrowthus causing the turning of the teeth carrying bars whereby the teethwill be angularly adjusted in the direction of the line of draft of theharrovv.

At opposite sides of the bearings 14 and surrounding the teeth carryingbars are screw set collars 28 Which prevent displacement of the saidbars Within the bearing 14 laterally of the line of draft of the harroW.

From the foregoing it is thought that the construction and operation ofthe invention Will be clearly understood and therefore a more extendedexplanation has been omitted.

'What is claimed is 1. In a harroW, a plurality 'of rotatable bars, aplurality of teeth pivotally connected to said bars, and a lever capableof movement in a plurality of directions for laterally adjusting saidteeth relative to the line cf draft of the harrovv and for rotating saidbars.

2. In a harroW, spaced parallel bars, bearings supported by said bars,rotatable bars journaled in said bearings transversely of the firstnamed bars, a series of harrovv teeth pivotally supported by the lastnamed bars, adjustable bars arranged at right angles to each other andconnected With the said teeth and rotatable bars respectively, and alever capable of movement in a plurality of directions for independentlyadjusting said pivoted to one of the rotatable bars in proximity to thesegment and to an upper transverse bar, a latch carried by the lever incooperative relation to the notch segment, a second notch segmentcarried by the link and disposed in proximity to the lever and a secondlatch carried by-t-he lever in cooperative relation to the second notchsegment.

In testimony whereof, I afiiX my signature, in presence of tWoWitnesses.

A'IHOL B. HAYS.

Witnesses: a

O. H. ERIcKsoN,

T. J. MORTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

